Confusion in this scenario

Question

I have 3 tables
1. Interdata –
INTERDATAID
SESSIONID
CLIENTIP
BROWSERTYPE
USERID
LOGINDATE
CREATEDDATE
SOURCEURL
DESTINATIONURL
DIFFERENCE
2. Filter-
FILTERID
SESSIONID
CLIENTIP
BROWSERTYPE
USERID
LOGINDATE
CREATEDDATE
3. Filterdetail-
FILTERDETAILID
FILTERID
SOURCEURL
DESTINATIONURL
CREATEDDATE
First I insert the records in interdata table through sqlldr.
Now I want to insert the records in filter and Filterdetail tables from interdata table.
But condition is that if sessionid already present in the filter table then do not insert the records in filter table.
And into Filterdetail table we have to take filterid from Filter table and insert the records
From Filterdetail table.
Please tell me the solution .
I am trying this from last two days.
Please help me.
Thanks and Regards,
Prathamesh.

Answer 1

Alternately
BEGIN
    FOR i IN ( SELECT sessionid FROM interdata
               MINUS
               SELECT sessionid FROM filter )
    LOOP
        INSERT INTO filter
        SELECT filter_id_seq.NEXTVAL
               , sessionid
               , clientip
               , browsertype
               , userid
               , logindate
               , min(createddate)
        FROM   interdata  
        WHERE  session_id = i.session_id
        GROUP BY filter_id_seq.NEXTVAL
               , sessionid
               , clientip
               , browsertype
               , userid
               , logindate;
        INSERT INTO filterdata
        SELECT filterdetail_id_seq.NEXTVAL
               , filter_id_seq.CURRVAL
               , sourceurl
               , destinationurl
               , createddate
        FROM   interdata  
        WHERE  session_id = i.session_id;
    END LOOP;
END;
/You should bench mark the two approaches to see which is more efficient. Bear in mind that the profile might change as the table sizes increase.
Cheers, APC